> Has anyone built / seen / bought a small simulator for WWVB? An example of a PC-based WWVB simulator is here: http://www.leapsecond.com/notes/wwvb1.htm http://www.leapsecond.com/notes/wwvb2.htm You can take the output of this and drive hardware: http://www.leapsecond.com/tools/tco1.c http://www.leapsecond.com/tools/tco2.c /tvb